【英文标准名称】:StandardTestMethodforUraniuminDrinkingWaterbyHigh-ResolutionAlpha-Liquid-ScintillationSpectrometry
【原文标准名称】:用高分辨α液体闪烁谱测量法测定饮用水中铀的标准试验方法
【标准号】:ASTMD6239-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D19.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:drinkingwater;extractivescintillator;high-resolutionalpha-liquid-scintillationspectrometer;pulse-shapediscrimination;solventextraction;radioactivity;uranium;Drinkingwater;Extractivescintillator;High-resolutionalpha-liquid-scintillations
【摘要】:Thistestmethodisafast,cost-effectivemethodthatcanyieldlimitedisotopicactivitylevelsfor238Uand234U,aswellastotaluraniumactivity.Although232Uisincorporatedasatracer,uraniumrecoveriesforthistestmeasuredduringthedevelopmentalworkonthistestmethodwereusuallybetween95and105%.Thehigh-resolutionalpha-liquid-scintillationspectrometeroffersaconstant(99.6x00B1;0.1)%countingefficiencyandinstrumentbackgroundsaslowas0.001countsperminute(minx2013;1)overa4to7MeVenergyrangeaccordingtoMcDowellandMcDowell(2).Countratesforextractivescintillatorblanksandreagentblanksusuallyrangefrom0.01minx2013;1to0.1minx2013;1.1.1Thistestmethodcoversdeterminingthetotalsolubleuraniumactivityindrinkingwaterintherangeof0.037Bq/L(1pCi/L)orgreaterbyselectivesolventextractionandhigh-resolutionalpha-liquid-scintillationspectrometry.Theenergyresolutionobtainablewiththistechniquealsoallowsestimationofthe238Uto234Uactivityratio.1.2Thistestmethodwastestedsuccessfullywithreagentwateranddrinkingwater.Itistheuser''sresponsibilitytoensurethevalidityofthistestmethodforwatersofuntestedmatrices.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection9.
【中国标准分类号】:C51
【国际标准分类号】:13_060_60
【页数】:8P.;A4
【正文语种】:英语